Finding the Third Proportional to 198,588 and 432,118.50

Step by Step Solution

1. Step 1: Write the proportion equation
   198,588 : 432,118.50 = 432,118.50 : x
2. Step 2: Convert to fraction form
   198,588/432,118.50 = 432,118.50/x
3. Step 3: Cross multiply
   198,588x = 432,118.50 × 432,118.50
4. Step 4: Simplify right side
   198,588x = 186,726,398,042.25
5. Step 5: Solve for x
   x = 186,726,398,042.25/198,588
6. Step 6: Final answer
   x = 940,270.30